1950's Santa Claus Christmas Mug. (I have a huge collection of milk glass mugs, but I don't have this one yet).
Vintage 1961 Holt Howard Winking Santa Miniature Mini Child's Christmas Mug | eBay
Vintage Santa's Workshop North Pole NY Souvenir Mug Near Lake Placid NY | eBay
I still have my vintage 1951 Santa mug like this one from when I was one year old.
Vintage Santa Claus Christmas Holiday Mug | eBay
Christmas in July -- Vintage Santa Mugs set of 7 Handpainted Vintage by pulloverthecar, $19.00
Vtg Royal Doulton Miniature Mini Santa Claus Toby Character Jug Mug D6706 | eBay
Vintage Lefton Christmas Double Faced RARE Santa Mrs Claus Mug | eBay
Vintage Mug Christmas Retro Santa by HogHeavenVintage on Etsy, $12.00
Vintage Original Sleeping Santa Claus Coffee Tea Mug Cup 1950s Ceramic Dimestore | eBay